From e4c45796cf94e8df70d6859d5f891acf8ee38fca Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 25 Apr 2020 12:22:20 +0200
Subject: WIP: Drag 'em balls

---
 plugingui/powerwidget.cc | 69 +++++++++++++++++++++++++++++++++++++++++++++---
 plugingui/powerwidget.h  |  6 +++++
 2 files changed, 72 insertions(+), 3 deletions(-)

diff --git a/plugingui/powerwidget.cc b/plugingui/powerwidget.cc
index a1af333..83ce2b9 100644
--- a/plugingui/powerwidget.cc
+++ b/plugingui/powerwidget.cc
@@ -35,6 +35,7 @@
 #include <powermap.h>
 
 #include <hugin.hpp>
+#include <cmath>
 
 PowerWidget::PowerWidget(GUI::Widget* parent,
                                          Settings& settings,
@@ -179,13 +180,14 @@ void PowerWidget::Canvas::repaintEvent(GUI::RepaintEvent *repaintEvent)
 	p.clear();
 
 	// draw the fixed nodes of the spline
+	float rad = radius * width();
 	p.setColour(GUI::Colour{0.f, 0.7f, .5f, 1.f});
 	p.drawFilledCircle(power_map.getFixed0().in*width(),
-	                   height() - power_map.getFixed0().out*height(), 3);
+	                   height() - power_map.getFixed0().out*height(), rad);
 	p.drawFilledCircle(power_map.getFixed1().in*width(),
-	                   height() - power_map.getFixed1().out*height(), 3);
+	                   height() - power_map.getFixed1().out*height(), rad);
 	p.drawFilledCircle(power_map.getFixed2().in*width(),
-	                   height() - power_map.getFixed2().out*height(), 3);
+	                   height() - power_map.getFixed2().out*height(), rad);
 
 	if(enabled)
 	{
@@ -216,6 +218,67 @@ void PowerWidget::Canvas::repaintEvent(GUI::RepaintEvent *repaintEvent)
 	old = { x, height() - y };
 }
 
+void PowerWidget::Canvas::buttonEvent(GUI::ButtonEvent* buttonEvent)
+{
+	float x0 = (float)buttonEvent->x / width();
+	float y0 = (float)(height() - buttonEvent->y) / height();
+
+	switch(buttonEvent->direction)
+	{
+	case GUI::Direction::up:
+		in_point = -1;
+		break;
+	case GUI::Direction::down:
+		if(std::abs(x0 - settings.fixed0_x.load()) < radius &&
+		   std::abs(y0 - settings.fixed0_y.load()) < radius)
+		{
+			in_point = 0;
+		}
+
+		if(std::abs(x0 - settings.fixed1_x.load()) < radius &&
+		   std::abs(y0 - settings.fixed1_y.load()) < radius)
+		{
+			in_point = 1;
+		}
+
+		if(std::abs(x0 - settings.fixed2_x.load()) < radius &&
+		   std::abs(y0 - settings.fixed2_y.load()) < radius)
+		{
+			in_point = 2;
+		}
+		break;
+	}
+}
+
+void PowerWidget::Canvas::mouseMoveEvent(GUI::MouseMoveEvent* mouseMoveEvent)
+{
+	switch(in_point)
+	{
+	case 0:
+		settings.fixed0_x.store((float)mouseMoveEvent->x / width());
+		settings.fixed0_y.store((float)(height() - mouseMoveEvent->y) / height());
+		redraw();
+		break;
+	case 1:
+		settings.fixed1_x.store((float)mouseMoveEvent->x / width());
+		settings.fixed1_y.store((float)(height() - mouseMoveEvent->y) / height());
+		redraw();
+		break;
+	case 2:
+		settings.fixed2_x.store((float)mouseMoveEvent->x / width());
+		settings.fixed2_y.store((float)(height() - mouseMoveEvent->y) / height());
+		redraw();
+		break;
+	default:
+		break;
+	}
+}
+
+void PowerWidget::Canvas::mouseLeaveEvent()
+{
+	//in_point = -1;
+}
+
 void PowerWidget::Canvas::parameterChangedFloat(float)
 {
 	power_map.setFixed0({settings.fixed0_x.load(), settings.fixed0_y.load()});
diff --git a/plugingui/powerwidget.h b/plugingui/powerwidget.h
index 3645dc7..54f5564 100644
--- a/plugingui/powerwidget.h
+++ b/plugingui/powerwidget.h
@@ -63,6 +63,9 @@ private:
 
 		// From Widget:
 		virtual void repaintEvent(GUI::RepaintEvent *repaintEvent) override;
+		virtual void buttonEvent(GUI::ButtonEvent* buttonEvent) override;
+		virtual void mouseMoveEvent(GUI::MouseMoveEvent* mouseMoveEvent) override;
+		virtual void mouseLeaveEvent() override;
 
 	private:
 		Powermap power_map;
@@ -74,6 +77,9 @@ private:
 		Settings& settings;
 
 		bool enabled{true};
+
+		int in_point{-1};
+		const float radius = 0.015;
 	};
 
 	void chk_enable(bool v);
-- 
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